Lighthead



FIG. 1 is a front perspective view of a lighthead;

FIG. 2 is a rear perspective view of the lighthead;

FIG. 3 is a front view of the lighthead;

FIG. 4 is a top plan view of the lighthead;

FIG. 5 is a right side view of the lighthead, wherein the left side viewis a mirror image thereof; and,

FIG. 6 is a rear view of the lighthead.

The broken lines shown in the figures represent portions of thelighthead that form no part of the claimed design.

CLAIM The ornamental design for a lighthead, as shown and described. 